Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

MRI may predict heart attack and stroke risk in people with diabetes

10.09.2013
Whole-body MRI may serve as a valuable noninvasive tool for assessing the risk of heart attack and stroke in diabetic patients, according to a new study published online in the journal Radiology.

Diabetes is a metabolic disease characterized by an increased concentration of glucose in the blood. There are 347 million diabetic patients worldwide, and the World Health Organization projects that diabetes will be the seventh leading cause of death by 2030.

Patients with diabetes are known to develop atherosclerosis, or thickening of the arterial walls, at an accelerated rate, resulting in a higher incidence of major adverse cardiac and cerebrovascular events (MACCE), such as a heart attack or stroke. However, there are wide variations in the degree of risk for adverse events among diabetic patients.

In recent years, whole-body MRI has emerged as a promising means to assess the cardiovascular systems of people with diabetes.

"One of the major advantages of whole-body MRI in this population is that the technique itself is not associated with radiation exposure, and larger body areas can be covered without increased risk, especially in younger patients," said Fabian Bamberg, M.D., M.P.H., from the Department of Radiology at Ludwig-Maximilians University in Munich, Germany. "As such, MRI can be used to evaluate the whole-body degree of disease burden that is not clinically apparent yet."

Dr. Bamberg and colleagues studied the predictive value of whole-body MRI for the occurrence of MACCE in 65 patients with diabetes. The patients underwent a contrast-enhanced whole-body MRI protocol, including brain, cardiac and vascular sequences. The researchers then conducted follow-up inquiries to assess the rate of MACCE in the study group.

Follow-up information was available for 61 patients. After a median of 5.8 years, 14 patients had experienced MACCE. Patients who had detectable vascular changes on whole-body MRI faced a cumulative MACCE risk rate of 20 percent at three years, and 35 percent at six years. None of the patients with a normal whole-body MRI went on to experience MACCE.

The findings point to a role for whole-body MRI as an accurate prognostic tool for diabetic patients that could speed effective treatments to those at risk, Dr. Bamberg said.

"Whole-body MRI may help in identifying patients who are at very high risk for future events and require intensified treatment or observation," he said. "Conversely, the absence of any changes on whole-body MRI may reassure diabetic patients that their risk for a heart attack, stroke or other major cardiac or cerebrovascular event is low."

Along with its prognostic accuracy, whole-body MRI has other advantages over existing methods of determining heart attack risk, according to Dr. Bamberg.

"Other established and valuable tools, such as myocardial perfusion imaging or computed tomography (CT) for quantification of coronary calcification, are generally limited to cardiac evaluation due to their associated risk profiles," he said. "Also, MRI provides unique insights into soft tissue pathology, including cerebral and vascular changes, such as restriction of blood flow to the brain."

Dr. Bamberg said that while whole-body MRI is a relatively recent development that needs more study, the results so far are promising.

"Our study provides preliminary evidence that the technique may be beneficial for risk stratification in patients with diabetes," he said. "We anticipate that emerging study findings in different diabetic cohorts will provide additional scientific basis to establish whole-body MRI as a screening modality."

"Diabetes Mellitus: Long-term Prognostic Value of Whole-Body MR Imaging for the Occurrence of Cardiac and Cerebrovascular Events." Collaborating with Dr. Bamberg were Klaus G. Parhofer, M.D., Elena Lochner, B.S., Roy P. Marcus, B.S., Daniel Theisen, M.D., Hannes M. Findeisen, M.D., Udo Hoffmann, M.D. M.P.H., Stefan O. Schönberg, M.D., Christopher L. Schlett, M.D., M.P.H., Maximilian F. Reiser, M.D., and Sabine Weckbach, M.D.

Radiology is edited by Herbert Y. Kressel, M.D., Harvard Medical School, Boston, Mass., and owned and published by the Radiological Society of North America, Inc.

RSNA is an association of more than 51,000 radiologists, radiation oncologists, medical physicists and related scientists promoting excellence in patient care and health care delivery through education, research and technologic innovation. The Society is based in Oak Brook, Ill. (RSNA.org)

For patient-friendly information on MRI, visit RadiologyInfo.org.

Linda Brooks | EurekAlert!
Further information:
http://www.rsna.org
http://RadiologyInfo.org

More articles from Medical Engineering:

nachricht A Challenging European Research Project to Develop New Tiny Microscopes
28.03.2017 | Technische Universität Braunschweig

nachricht 3-D visualization of the pancreas -- new tool in diabetes research
15.03.2017 | Umea University

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Researchers shoot for success with simulations of laser pulse-material interactions

29.03.2017 | Materials Sciences

Igniting a solar flare in the corona with lower-atmosphere kindling

29.03.2017 | Physics and Astronomy

As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation

29.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>